<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <div id="app">
        <h1>{{msg}}</h1>
    </div>
    
    <!-- vue3.x的引入 -->
    <!-- <script src="https://unpkg.com/vue@next"></script> -->
    
    <!-- vue2.x的引入 -->
    <script src="https://unpkg.com/vue/dist/vue.js"></script>
    
    <script>
        // vue3的挂载
        // Vue.createApp({
        //     data(){
        //         return {
        //             msg:"hello world"
        //         }
        //     }
        // }).mount("#app")
        
        //vue2的挂载
        var app = new Vue({
            el: '#app',
            data: {
                msg: 'hello world'
            }
        })
    </script>
</body>

</html>